Hand-operated cutting implement



July 24, 1928.

J. KASZTLER HAND ornnunv cuw'me mrmgam Filed April 1927 (finfaszi'lermvrg oR BY 2 "railway I Patented July 24, 1928.

UNITED STATES JOHN KASZTLER, OF CHICAGO, ILLINOIS.

HAND-OPERATED CUTTING IMPLEMENT.

Application filed April 8,

This invention relates to new and useful improvements in cuttingimplements, and more particularly to a hand operated cutting implementwhich is especially adapted, for use in the cutting of pipe and thelike. One of the objects of myinventionis the provision of a device ofthis character, which is comparatively easy to handle, whereby anoperator mayreadily apply the same to the worlr to be operated upon andeasily operate the same after being applied to the work.

Another object of my invention is the provision of a device of the abovecharacter, which isprovided with means for gripping the work and holdingthe-same steady while the same is being operated upon, and at the sametime hold the work from displacement, so that the cuttingimplement willtravel through the same. I

Vfith the above and other objects in view the invention consists in thenovel features of construction, the combination and arrangement of partshereinaf er more fully set forth, pointed out in the claims and shown inthe accompanying drawings, in which:

Figure 1 is a longitudinal sectional view of a cutting implementconstructed in accordance with my invention, and

Figure 2 is a longitudinal sectional view on the line 22 of Figure 1.

In carrying out my invention I provide a hollow body member 1, which issubstantially rectangular in cross section and closed I at one end, withthe closed end terminating into a handle portion 2. Extending from theother end of the body at one side thereof, is an integral arm 3, while aparallel arm 4 is hinged at the end of the body on the opposite side asshown at 5.

Formed at the outer ends of the arms 3 and t are the bearing sleeves 6in which is rotatably mounted the shaft 7. The rotary cutting implement8, shownin the drawings as a saw, is formed with a cent 'al sleeve 9mounted on and secured to the shaft 7 between the bearing sleeves 6. Oneend of the shaft has a securing nut 10 thereon, while the other projectsbeyond one of the sleeves 6 and has a small gear 11 mounted thereon andsecured thereto.

The gear 11 meshes with a larger gear 12 mounted on a stud shaft 13detachably secured to one side wall of the body 1, as shown at 14. Itwill be apparent that by 1927. Serial 110,182,083. 1

employing a relatively large gear 12 and small gear 11 the cuttingimplement may be rotated at a comparatively high rate of speed. Attachedto the outer face of the gear 12 is a handle member 15' adapted to begrasped for imparting movement to the gears 11 and 12.

In order to provide means for holding the work steady and atthe sametime draw the same toward the cutting implement, an arm 16 is providedwhich is formed intermediate it's ends with a longitudinal slot 17 toreceive the shaft as shown in Figured, The inner end of the arm 16 isformed with a transverse portion 18, which has a stud 19 on its innerface. Extending through the:

stud 19 is one end of a 'coil spring 20, the outer convolutlons ofvwhich are mounted upon the stud- The spring 20 is housed within the body1 and its inner end is sc cured to a cross pin 21, the ends of which are.of a pin 25. This jaw 23 is normally urged toward the work A by meansof a spring 26, preferably U-shaped with its intermediate portionbearing against the outer end of the arm 16 while theside portions arecoiled upon the endsof the pivot pin 25. The ends of the spring arecrossed as shown at 27 and their extremities bent at right angles forengagement with the jaw for normally urging the jaw toward the work.

From the above it will be readily apparent that I have provided animproved cutting implement which can be readily operated by grasping thehandle 2 by one hand and positioning the work between the outer end ofthe arm 16 and the jaw 23 with the other ,hand. After the work has beenplaced in position, the handle 15 is grasped for impartmg rotarymovement to the gears 11 and 12 and the saw or cutting implement 8. Itwill be apparent that as the saw cuts into the work, the tension of thespring 20 will have a tendency to draw the work inwardly toward the bodyand the work being positioned between the outer end of the arm 16 andthe jaw 23, will beheld against displacement. It will be apparent thatthe tension of the spring 26 will be of sufficient strength to hold thework against the lower end of the arm 16 when the tension of the spring20' is functioning to pull the work against the implement.

While I have particularly specified that the device is especiallyadapted for use in cutting pipe and the like, it will be apparent thatit may be used for many other puraosesp ,While I have shown' anddescribed the preferred construction of my device, it will be apparentthat various changes and alterations may be carried out withoutdeparting from the spirit of the invention or the scope of the appendedclaims.

' 1 claim as my invention:

1. in a device of the class described and in combination, a body memberhaving a handle at oneend, a stationary arm projecting from the otherend, a hinged arm nornially parallel with the first arm, a cuttingimplement removably supported for rotation between the outer ends ofsaid arms, means '-for imparting movement to said cutting implement, andmeans supported by the body for engaging the work being operated upon bythe cutting implement.

2. in a device of the class described, a hollow body member having ahandle at one end, supporting arms extending from the other end, arotary cutting implement removably supported between said arms, meansfor imparting movement to said out ting implement, an arm movablymounted relative to said body and cutting impleinner end of the hollowportion of the body,-

and a spring actuated clamping jaw for clamping the work to the outerend of said arm. n

4t. In a device of the class described, a body member having a handle atone end, spaced supporting arms at the other end,'a shaft removablymounted in the outer ends of said arms, a cutting implement carried bysaid arm, means for rotating said; shaft, and means for engaging thework being operated upon, including an arm formed with a slot to receivethe shaft, a spring connecting the inner end of thearm to the inner endof the hollow portion of the body, and a spring actuated clamping jawfor clamping the work to the outer end of said arm.

JOHN KA SZTLER.

